The world once destroyed, now a world to be healed.
And our mythical heros, the chosen saviors, the seeds of a new humanity...were dropped into one monster free area, given a small population of humanity to coordinate, and instructed to create the worlds first Village. They did so, and more. And as the system challenged them, their area of influence grew, pushing back the walls of the time bubble for new people and resources.
But there are always monsters. Some, you will never see coming...